Process and apparatus for making a yarn

Details Process and apparatus for making a yarn Process and apparatus for making a yarn

1986-05-30

1987-06-16

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57328, 57331, 57334, 57401, 57409, 57410, D01H 1135, D01H 7885, D01H 528, D02G 336

Patent

active

046728007

ABSTRACT:
In the making of a yarn, a stream of drawn core fibers (17a) is twisted in a triangular twisting space (4) between two juxtaposed, closely spaced apart twisting drums (1, 2), which are rotated in the same sense, and covering fibers are wound about said stream of fibers in said twisting space. To make said yarn from a single roving (17), the drawn roving (17) is fed to the twisting space (4) on the circumference of a feed roller (8), to which a vacuum is applied, the roving which has been fed on said feed roller is divided into two streams of fibers (17a, 17b) before reaching the twisting space (4), one (17a) of said streams of fibers is intended to constitute the core of the yarn to be made and is moved on the feed roller (8) as far as to the twisting space (4), and the other (17b) stream of fibers consists of the covering fibers and is detached from the feed roller (8 ) and its fibers are caused to fly freely into the twisting space (4).

REFERENCES:
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patent: 4183202 (1980-01-01), Morihashi
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patent: 4241571 (1980-12-01), Turk et al.
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patent: 4281507 (1981-08-01), Didek et al.
patent: 4322944 (1982-04-01), Sraitr et al.
patent: 4327545 (1982-05-01), Fehrer
patent: 4483136 (1984-11-01), Stahlecker et al.
patent: 4524580 (1985-06-01), Fehrer
patent: 4574572 (1986-03-01), Fehrer

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